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陈升孛,吴坤悌,陈明,赵蕾,张亚杰,等.海南早稻灌浆成熟期高温热害对千粒重的影响[J].中国农学通报,2018,34(27):8-11.吴坤悌,陈明,赵蕾,张亚杰,et al.High Temperature Damage at Grain Filling Stage of Early Rice in Hainan: Effects on 1000-grain Weight[J].Chinese Agricultural Science Bulletin,2018,34(27):8-11
海南早稻灌浆成熟期高温热害对千粒重的影响
High Temperature Damage at Grain Filling Stage of Early Rice in Hainan: Effects on 1000-grain Weight
投稿时间:2017-07-06  修订日期:2018-09-10
DOI:10.11924/j.issn.1000-6850.casb17070025
中文关键词: 早稻,高温热害,灌浆结实期,海南
英文关键词: early rice  high temperature damage  grain filling stage  Hainan
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基金项目:海南省气象局2014 年科技创新项目“海南省早稻关键期的高温影响及防御研究”(HNQXQN201404)。
作者单位E-mail
陈升孛 海南省气象服务中心 30509271@qq.com 
吴坤悌 海南省气象服务中心 993184040@qq.com 
陈明 海南省气象服务中心 30509271@qq.com 
赵蕾 海南省气象服务中心 378848577@qq.com 
张亚杰 海南省气候中心 zhyajie87@163.com 
中文摘要:
      在全球气候变暖背景下,利用海南省2005—2016 年气象资料、早稻产量资料、早稻农业气象观测资料,以32℃高温为早稻高温热害起始温度,计算灌浆成熟期内高温时数和热害积温,以探究高温热害导致海南早稻千粒重变化的规律及其影响程度。结果表明:海南早稻灌浆成熟期热害积温和热害时数均呈现逐年上升趋势;灌浆成熟期热害积温和热害时数对千粒重的影响规律均可由对数函数来拟合,相关系数分别为0.69和0.68,其中,千粒重随着热害积温和热害时数的增加而降低,且下降速率逐渐减慢。
英文摘要:
      Under the background of global climate warming, based on the meteorological data, early rice production data and early rice agro-meteorological observation data from 2005 to 2016, the authors calculated high temperature (≥32℃) hours and thermal accumulated temperature at grain filling stage, in order to explore the regularity and effects of high temperature damage on 1000-grain weight of early rice in Hainan. The results indicated that: the high temperature hours and thermal accumulated temperature at grain filling stage of early rice both increased annually in Hainan, and could be fitted by logarithmic function, with the correlation coefficients of 0.69 and 0.68 respectively. 1000-grain weight decreased with the increase of high temperature hours and thermal accumulated temperature, and the rate of descent slowed down gradually.
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